Click on the third or sixth rank to set the en passant target square.

EGTB: win in 4 half-moves

# move score
1 Rb2 win in 3 half-moves
2 Rb4 win in 3 half-moves
3 Ke2 win in 5 half-moves
4 Ke4 win in 5 half-moves
5 Ked2 win in 5 half-moves
6 Kc4 win in 7 half-moves
7 Ked3 win in 9 half-moves
8 Ked4 win in 9 half-moves
9 Rb1 win in 11 half-moves
10 Kb2 draw
11 Kb4 draw
12 Kc2 draw
13 Kcd2 draw
14 Kcd3 draw
15 Kcd4 draw
16 Kf2 draw
17 Kf3 draw
18 Kf4 draw
19 Ra3 draw
20 Rb5 draw
21 Rb6 loss in 2 half-moves
22 Rb7 loss in 2 half-moves
23 Rb8 loss in 2 half-moves